@totto/function

A comprehensive collection of TypeScript utilities and Effect ecosystem integrations, optimized for modern JavaScript runtimes including Deno, Node.js, Bun, and browsers.

Installation

# Using JSR
npx jsr add @totto/function
yarn add jsr:@totto/function
pnpm add jsr:@totto/function
bun add @totto/function
deno add jsr:@totto/function

Core Modules

Effect Ecosystem

• effect - Core Effect library re-exports
• effect/ai - AI integrations for Anthropic and OpenAI
• effect/platform - Platform-specific implementations (Node.js, Bun, Browser)
• effect/test - Enhanced testing utilities for Deno and Vitest
• effect/rpc - Remote procedure call utilities
• effect/printer - Console printing and ANSI utilities
• effect/util - TypeScript type helpers and Effect utilities

Utility Libraries

• type - Type-fest utilities for advanced TypeScript types
• option-t - Option-t library with Effect bridge functionality
• temporal - Temporal API utilities
• memo - Memoization utilities (moize)
• case - String case conversion utilities
• di - Dependency injection utilities (velona)
• test - Deno testing utilities

TypeScript Configurations

• tsconfig/base - Base TypeScript configuration with strict settings
• tsconfig/node22 - Node.js 22 optimized configuration
• tsconfig/node24 - Node.js 24 optimized configuration
• tsconfig/react - React/Vite optimized configuration
• tsconfig/react-router - React Router/Remix optimized configuration
• tsconfig/expo - Expo/React Native optimized configuration

Usage

Type-safe Option Handling

import { Option } from "@totto/function/option-t";
import { pipe } from "@totto/function/effect";

const result = pipe(
  Option.some(42),
  Option.map((x) => x * 2),
  Option.getOrElse(() => 0),
);

License

MIT